Reduction of Compton background from hydrogen in prompt gamma-ray analysis by multiple photon detection

2008 ◽  
Vol 278 (3) ◽  
pp. 685-689 ◽  
Author(s):  
Y. Toh ◽  
M. Oshima ◽  
A. Kimura ◽  
M. Koizumi ◽  
K. Furutaka ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Prompt Gamma ◽  
Photon Detection ◽  
Compton Background

scholarly journals Localization of inclusions in multiple prompt gamma ray analysis: a feasibility study

2013 ◽  
Vol 470 ◽  
pp. 012001 ◽  
Author(s):  
A Miceli ◽  
G Festa ◽  
R Senesi ◽  
G Gorini ◽  
C Andreani
Keyword(s):  
Feasibility Study ◽  
Gamma Ray ◽  
Prompt Gamma

PO-1728: Development of a new prompt gamma ray detection system for full 3D proton range verification

2020 ◽  
Vol 152 ◽  
pp. S957-S958
Author(s):  
P. Costanza ◽  
R.I. Mackay ◽  
K.J. Kirkby ◽  
M.J. Taylor
Keyword(s):  
Gamma Ray ◽  
Detection System ◽  
Prompt Gamma ◽  
Range Verification

scholarly journals Optical Afterglows as Probes for the Central Engine and Fireball of Gamma-Ray Bursts

2012 ◽  
Vol 8 (S290) ◽  
pp. 263-264
Author(s):  
Liang Li ◽  
En-Wei Liang ◽  
He Gao ◽  
Bing Zhang
Keyword(s):  
Statistical Analysis ◽  
Gamma Rays ◽  
Density Profile ◽  
Gamma Ray ◽  
Ambient Medium ◽  
Gamma Ray Bursts ◽  
Prompt Gamma ◽  
Medium Density ◽  
Central Engine ◽  
Prompt Emission

AbstractWell-sampled optical lightcurves of 146 gamma-ray bursts (GRBs) are compiled from literature. We identify possible emission components based on our empirical fits and present statistical analysis for these components. We find that the flares are related to prompt emission, suggesting that they could have the same origin in different episodes. The shallow decay segment is not correlated with prompt gamma-rays. It likely signals a long-lasting injected wind from GRB central engines. Early after onset peak is closely related with prompt emission. The ambient medium density profile is likely n ∝ r−1. No correlation between the late re-brightening bump and prompt gamma-rays or the onset bump is found. They may be from another jet component.

Prompt gamma ray diagnostics of advanced fuel fusion plasmas

1990 ◽  
Vol 61 (10) ◽  
pp. 3223-3225 ◽  
Author(s):  
F. E. Cecil ◽  
H. Liu ◽  
J. C. Scorby ◽  
S. S. Medley
Keyword(s):  
Gamma Ray ◽  
Prompt Gamma ◽  
Fusion Plasmas ◽  
Advanced Fuel

Neutron capture prompt gamma-ray analysis of stratospheric and groundfall ASH following the MT. ST. Helens eruption of May 18, 1980

1982 ◽  
Vol 71 (1-2) ◽  
pp. 47-58 ◽  
Author(s):  
D. L. Anderson ◽  
J. M. Phelan ◽  
T. Vossler ◽  
W. H. Zoller
Keyword(s):  
Neutron Capture ◽  
Gamma Ray ◽  
Prompt Gamma

Characterization of Materials for a Hydrogen-Based Economy by Cold Neutron Prompt Gamma-Ray Activation Analysis

2008 ◽  
Vol 1098 ◽  
Author(s):  
Rick Paul ◽  
Lei Raymond Cao
Keyword(s):  
Activation Analysis ◽  
Hydrogen Storage ◽  
Gamma Ray ◽  
Cold Neutron ◽  
Proton Conductors ◽  
Prompt Gamma ◽  
Hydrogen Storage Materials ◽  
Storage Materials ◽  
Characterization Of Materials

AbstractAn instrument for cold neutron prompt gamma-ray activation analysis (PGAA) at the NIST Center for Neutron Research (NCNR) has proven useful for the chemical characterization of hydrogen storage materials and other materials of importance to a hydrogen-based economy. The detection limit for hydrogen is less than 10 mg/kg for most materials. Potential hydrogen storage materials that have been characterized by PGAA include single-wall carbon nanotubes with and without boron doping, porous carbons, lithium magnesium imides, and ternary hydrides of various elements. The capability to allow in situ hydrogenation and characterization of materials is currently under development. PGAA has also been used to characterize materials used in hydrogen fuel cells, including solid proton conductors, polymer membrane, and proton exchange membranes. Future upgrades to the instrument will improve detection limits and functionality of the instrument.

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